基本信息:
- 专利标题： 一种冷轧生产800MPa级双相钢的表面控制方法
- 专利标题（英）：Surface control method for 800 MPa-grade dual-phase steel produced through cold rolling
- 申请号：CN201910725364.9 申请日：2019-08-07
- 公开(公告)号：CN110396657A 公开(公告)日：2019-11-01
- 发明人： 李振 , 程晓杰 , 冯超凡 , 齐春雨 , 柳智博 , 孔凡庆 , 马兵智 , 商光鹏 , 吴耐 , 任君茹 , 陈斌 , 龚坚
- 申请人： 北京首钢冷轧薄板有限公司
- 申请人地址： 北京市顺义区李桥镇任李路200号
- 专利权人： 北京首钢冷轧薄板有限公司
- 当前专利权人： 北京首钢冷轧薄板有限公司
- 当前专利权人地址： 北京市顺义区李桥镇任李路200号
- 代理机构： 北京华沛德权律师事务所
- 代理人： 马苗苗
- 主分类号： C23C2/06
- IPC分类号： C23C2/06 ; C23C2/40
The invention provides a surface control method for 800 MPa-grade dual-phase steel produced through cold rolling. The surface control method comprises the following steps that a steel blank undergoeshot rolling curling, cold rolling and zinc plating, in the zinc plating process, the dew point temperature in a furnace is controlled to be -25 DEG C to -35 DEG C, before the dual-phase steel is produced, humidifying of a furnace nose is stopped, and the volume content of hydrogen in the atmosphere in the furnace is adjusted to be 1% to 3%. By controlling the dew point condition of the furnace region, the humidifying state of the furnace nose, the atmosphere in the furnace and the like, the direction is indicated for solving of the problem of fluctuation of a zinc layer of the cold-rolled zinc-plated dual-phase high-strength steel, the problem of the fluctuation defect of the zinc layer of the zinc-plated dual-phase high-strength steel is well solved, the product quality is effectively improved, and considerable economic benefits are brought.